Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Reexamination Certificate
2006-08-29
2006-08-29
Bagnell, David (Department: 3672)
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
C166S311000, C166S055700, C166S173000, C166S175000, C166S099000, C015S104160
Reexamination Certificate
active
07096950
ABSTRACT:
A downhole tool (1) for providing the dual role of cleaning and milling within a wellbore casing or liner is described. In an embodiment scraper blades (6) are mounted on a body (2) together with a milling sleeve (4). Additionally, a centralizer sleeve (3) is incorporated as is a filter and/or junk basket for collecting debris is dislodged from the casing or liner during the cleaning and milling operation. The milling sleeve (4) can be locked onto the body (2) while the cleaning members e.g. scraper blades (6) may be free floating around the tool (1).
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Howlett Paul David
Telfer George
Anthony Ted A.
Bagnell David
Bomar Shane
Domingue C. Dean
Specialised Petroleum Services Group Limited
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